sys/dev/pcmcia/nca_pcmcia.c

   1 /*      $NetBSD: nca_pcmcia.c,v 1.23 2008/04/04 16:19:51 tsutsui Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2000, 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: nca_pcmcia.c,v 1.23 2008/04/04 16:19:51 tsutsui Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/device.h>
  38 #include <sys/buf.h>
  39
  40 #include <sys/bus.h>
  41 #include <sys/intr.h>
  42
  43 #include <dev/scsipi/scsi_all.h>
  44 #include <dev/scsipi/scsipi_all.h>
  45 #include <dev/scsipi/scsiconf.h>
  46
  47 #include <dev/pcmcia/pcmciareg.h>
  48 #include <dev/pcmcia/pcmciavar.h>
  49 #include <dev/pcmcia/pcmciadevs.h>
  50
  51 #include <dev/ic/ncr5380reg.h>
  52 #include <dev/ic/ncr5380var.h>
  53 #include <dev/ic/ncr53c400reg.h>
  54
  55 struct nca_pcmcia_softc {
  56         struct ncr5380_softc    sc_ncr5380;     /* glue to MI code */
  57
  58         /* PCMCIA-specific goo. */
  59         struct pcmcia_function *sc_pf;          /* our PCMCIA function */
  60         void *sc_ih;                            /* interrupt handler */
  61
  62         int sc_state;
  63 #define NCA_PCMCIA_ATTACHED     3
  64 };
  65
  66 int     nca_pcmcia_match(device_t, cfdata_t, void *);
  67 int     nca_pcmcia_validate_config(struct pcmcia_config_entry *);
  68 void    nca_pcmcia_attach(device_t, device_t, void *);
  69 int     nca_pcmcia_detach(device_t, int);
  70 int     nca_pcmcia_enable(device_t, int);
  71
  72 CFATTACH_DECL_NEW(nca_pcmcia, sizeof(struct nca_pcmcia_softc),
  73     nca_pcmcia_match, nca_pcmcia_attach, nca_pcmcia_detach, NULL);
  74
  75 #define MIN_DMA_LEN 128
  76
  77 /* Options for disconnect/reselect, DMA, and interrupts. */
  78 #define NCA_NO_DISCONNECT       0x00ff
  79 #define NCA_NO_PARITY_CHK       0xff00
  80
  81 const struct pcmcia_product nca_pcmcia_products[] = {
  82         { PCMCIA_VENDOR_INVALID, PCMCIA_PRODUCT_INVALID,
  83           PCMCIA_CIS_INVALID },
  84 };
  85 const size_t nca_pcmcia_nproducts =
  86     __arraycount(nca_pcmcia_products);
  87
  88 int
  89 nca_pcmcia_match(device_t parent,  cfdata_t cf, void *aux)
  90 {
  91         struct pcmcia_attach_args *pa = aux;
  92
  93         if (pcmcia_product_lookup(pa, nca_pcmcia_products, nca_pcmcia_nproducts,
  94             sizeof(nca_pcmcia_products[0]), NULL))
  95                 return 1;
  96         return 0;
  97 }
  98
  99 int
 100 nca_pcmcia_validate_config(struct pcmcia_config_entry *cfe)
 101 {
 102
 103         if (cfe->iftype != PCMCIA_IFTYPE_IO ||
 104             cfe->num_memspace != 0 ||
 105             cfe->num_iospace != 1)
 106                 return EINVAL;
 107         return 0;
 108 }
 109
 110 void
 111 nca_pcmcia_attach(device_t parent, device_t self, void *aux)
 112 {
 113         struct nca_pcmcia_softc *esc = device_private(self);
 114         struct ncr5380_softc *sc = &esc->sc_ncr5380;
 115         struct pcmcia_attach_args *pa = aux;
 116         struct pcmcia_config_entry *cfe;
 117         struct pcmcia_function *pf = pa->pf;
 118         int flags;
 119         int error;
 120
 121         sc->sc_dev = self;
 122         esc->sc_pf = pf;
 123
 124         error = pcmcia_function_configure(pf, nca_pcmcia_validate_config);
 125         if (error) {
 126                 aprint_error_dev(self, "configure failed, error=%d\n", error);
 127                 return;
 128         }
 129
 130         cfe = pf->cfe;
 131         sc->sc_regt = cfe->iospace[0].handle.iot;
 132         sc->sc_regh = cfe->iospace[0].handle.ioh;
 133
 134         /* Initialize 5380 compatible register offsets. */
 135         sc->sci_r0 = C400_5380_REG_OFFSET + 0;
 136         sc->sci_r1 = C400_5380_REG_OFFSET + 1;
 137         sc->sci_r2 = C400_5380_REG_OFFSET + 2;
 138         sc->sci_r3 = C400_5380_REG_OFFSET + 3;
 139         sc->sci_r4 = C400_5380_REG_OFFSET + 4;
 140         sc->sci_r5 = C400_5380_REG_OFFSET + 5;
 141         sc->sci_r6 = C400_5380_REG_OFFSET + 6;
 142         sc->sci_r7 = C400_5380_REG_OFFSET + 7;
 143
 144         sc->sc_rev = NCR_VARIANT_NCR53C400;
 145
 146         /*
 147          * MD function pointers used by the MI code.
 148          */
 149         sc->sc_pio_out = ncr5380_pio_out;
 150         sc->sc_pio_in =  ncr5380_pio_in;
 151         sc->sc_dma_alloc = NULL;
 152         sc->sc_dma_free  = NULL;
 153         sc->sc_dma_setup = NULL;
 154         sc->sc_dma_start = NULL;
 155         sc->sc_dma_poll  = NULL;
 156         sc->sc_dma_eop   = NULL;
 157         sc->sc_dma_stop  = NULL;
 158         sc->sc_intr_on   = NULL;
 159         sc->sc_intr_off  = NULL;
 160
 161         /*
 162          * Support the "options" (config file flags).
 163          * Disconnect/reselect is a per-target mask.
 164          * Interrupts and DMA are per-controller.
 165          */
 166 #if 0
 167         flags = 0x0000; /* no options */
 168 #else
 169         flags = 0xffff; /* all options except force poll */
 170 #endif
 171
 172         sc->sc_no_disconnect = (flags & NCA_NO_DISCONNECT);
 173         sc->sc_parity_disable = (flags & NCA_NO_PARITY_CHK) >> 8;
 174         sc->sc_min_dma_len = MIN_DMA_LEN;
 175
 176         error = nca_pcmcia_enable(self, 1);
 177         if (error)
 178                 goto fail;
 179
 180         sc->sc_adapter.adapt_enable = nca_pcmcia_enable;
 181         sc->sc_adapter.adapt_refcnt = 1;
 182
 183         ncr5380_attach(sc);
 184         scsipi_adapter_delref(&sc->sc_adapter);
 185         esc->sc_state = NCA_PCMCIA_ATTACHED;
 186         return;
 187
 188 fail:
 189         pcmcia_function_unconfigure(pf);
 190 }
 191
 192 int
 193 nca_pcmcia_detach(device_t self, int flags)
 194 {
 195         struct nca_pcmcia_softc *sc = device_private(self);
 196         int error;
 197
 198         if (sc->sc_state != NCA_PCMCIA_ATTACHED)
 199                 return 0;
 200
 201         error = ncr5380_detach(&sc->sc_ncr5380, flags);
 202         if (error)
 203                 return error;
 204
 205         pcmcia_function_unconfigure(sc->sc_pf);
 206
 207         return 0;
 208 }
 209
 210 int
 211 nca_pcmcia_enable(device_t self, int onoff)
 212 {
 213         struct nca_pcmcia_softc *sc = device_private(self);
 214         int error;
 215
 216         if (onoff) {
 217                 /* Establish the interrupt handler. */
 218                 sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_BIO,
 219                     ncr5380_intr, &sc->sc_ncr5380);
 220                 if (sc->sc_ih == NULL)
 221                         return EIO;
 222
 223                 error = pcmcia_function_enable(sc->sc_pf);
 224                 if (error) {
 225                         pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
 226                         sc->sc_ih = 0;
 227                         return error;
 228                 }
 229
 230                 /* Initialize only chip.  */
 231                 ncr5380_init(&sc->sc_ncr5380);
 232         } else {
 233                 pcmcia_function_disable(sc->sc_pf);
 234                 pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
 235                 sc->sc_ih = 0;
 236         }
 237
 238         return 0;
 239 }